4 years ago

A house is generally warmer upstair that it is downstairs due to

Physics

2 answers:

Helga [31]4 years ago

5 0

The thermal energy given by the sun, to the roof, transmitted into the upstairs room
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mote1985 [20]4 years ago

4 0

I think that upstairs has the heat on and downstairs has the cold on to make upstairs hotter than downstairs

Hope this helps!!

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Which of the following is defined as a force that pushes and pulls the current through the circuit? Group of answer choices D) r

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Answer:

C voltage

Explanation:

Voltage is the change in electric potential so basically current flows from high potential to low potential due to voltage.

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3 years ago

A 20.0 Ω, 15.0 Ω, and 7.00 Ω resistor are connected in parallel to an emf source. A current of 7.00 A is in the 15.0 Ω resistor.

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PART A)

Equivalent resistance in parallel is given as

$\frac{1}{R} = \frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3}$

now we have

$\frac{1}{R} = \frac{1}{20} + \frac{1}{15} + \frac{1}{7}$

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PART B)

since potential difference across all resistance will remain same as all are in parallel

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$V = iR$

As we know i = 7 A current flows through 15 ohm resistance

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PART C)

Similarly ohm's law for 20 ohm resistance we can say

$V = iR$

$105 = i(20 ohm)$

$i = 5.25 A$

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4 years ago

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4 years ago

Which does not represent a change in velocity?

alina1380 [7]

Answer:

A balloon is floating up into the air at 1 m/s.

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A balloon floating up into the air at 1m/s shows no directional change.

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3 years ago

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Frequency = 1/period. ... 1 / 18 sec = (1/18) per sec. That's 0.056 per sec or 0.056 Hz. (rounded) (5.6 x 10^-2 Hz)

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3 years ago

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